Steganographic method of unsupported text based on linguistic steganographic feature space

Abstract

A carrierless text steganography method based on language steganographic feature space, constructing a steganographic feature space and a meta tree set based on one or more language steganographic features, establishing a mapping relationship based on a key, and determining Convert the secret message into a binary string according to the rules and then segment it, select text arbitrarily and generate a text sequence with the same length as the binary string of the secret message, sequentially put the binary substring and the corresponding elements in the text sequence in the meta tree set Find the corresponding meta-tree by matching on the above, construct these meta-trees into a steganographic tree, and send the steganographic tree identifier and carrier text to the receiver after obtaining the steganographic tree identifier. On the same language steganographic feature space and meta-tree set, the receiver splits the steganographic tree into meta-tree sequences, and then matches these meta-tree sequences with the corresponding elements in the text sequence generated based on the carrier text to obtain the secret message Corresponding to the binary fragment, and then get the secret message. The method has higher concealment and larger hiding capacity.

Description

technical field [0001] The invention relates to a carrierless text steganography method based on language steganography feature space, which belongs to the field of text information hiding. Background technique [0002] The ever-increasing mass of information on the World Wide Web has greatly facilitated people's lives. At the same time, various information leakage and information hijacking problems are emerging one after another, which has caused many major losses. Therefore, people pay more and more attention to information security issues, which accelerates the development of information hiding. As the most widely used medium in network communication and daily life, text is not as widely used in the field of information hiding as image, video and audio. This is mainly due to less redundant information in the text, small hidden capacity and high difficulty. At present, text information hiding is mainly divided into two methods: modified carrier and no carrier. Text-bas...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of poor versatility and small hidden capacity in the above-mentioned text steganography methods, the present invention provides a carrierless text steganography method based on language steganography feature space

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